Finding the Fourth Proportional to 144,528.69, 216,644.79 and 55,747.29

Step by Step Solution

1. Step 1: Write the proportion equation
   144,528.69 : 216,644.79 = 55,747.29 : x
2. Step 2: Convert to fraction form
   144,528.69/216,644.79 = 55,747.29/x
3. Step 3: Cross multiply
   144,528.69x = 216,644.79 × 55,747.29
4. Step 4: Simplify right side
   144,528.69x = 12,077,359,935.12
5. Step 5: Solve for x
   x = 12,077,359,935.12/144,528.69
6. Step 6: Final answer
   x = 83,563.75